/* viral·matrix — the seomatrix family palette (green Matrix, Mono brand + Inter text). */
:root {
  --bg: #07110b; --bg-2: #0d1a12; --card: #112319; --line: #2b4636; --line-2: #3a5546;
  --text: #e4f2e9; --text-2: #a9c2b4; --muted: #7f998a;
  --accent: #3ddc84; --accent-ink: #062012; --accent-soft: rgba(61, 220, 132, .12);
  --amber: #f2b45a; --amber-soft: rgba(242, 180, 90, .12);
  --red: #ff8a7a; --red-soft: rgba(255, 138, 122, .12);
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --sans: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --r: 10px;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f8f5; --bg-2: #eaf2ec; --card: #ffffff; --line: #cfe0d5; --line-2: #b6cdbf;
    --text: #0b1f14; --text-2: #34503f; --muted: #5d7868;
    --accent: #1f8f52; --accent-ink: #ffffff; --accent-soft: rgba(31, 143, 82, .10);
    --amber: #9a5d00; --amber-soft: rgba(154, 93, 0, .10);
    --red: #b3261e; --red-soft: rgba(179, 38, 30, .08);
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--sans); }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
code, .mono { font-family: var(--mono); font-size: .92em; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--card); padding: 6px 10px; z-index: 10; }

/* header */
.top { border-bottom: 1px solid var(--line); background: var(--bg-2); }
.top .wrap { display: flex; align-items: center; gap: 20px; min-height: 60px; flex-wrap: wrap; }
.brand { font: 700 18px var(--mono); color: var(--text); text-decoration: none; letter-spacing: -.02em; }
.brand b { color: var(--accent); }
.nav { display: flex; gap: 4px; flex-wrap: wrap; margin-left: auto; align-items: center; }
.nav a { color: var(--text-2); text-decoration: none; padding: 8px 10px; border-radius: 8px; font-size: 15px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: var(--accent-soft); }

/* type */
h1 { font: 700 clamp(28px, 4.4vw, 44px)/1.15 var(--mono); letter-spacing: -.03em; margin: 0 0 14px; }
h2 { font: 700 22px/1.3 var(--mono); letter-spacing: -.02em; margin: 0 0 12px; }
h3 { font: 600 17px/1.35 var(--sans); margin: 0 0 6px; }
.lead { color: var(--text-2); font-size: 18px; margin: 0 0 8px; max-width: 70ch; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.hero { padding: 40px 0 24px; }
.kicker { font: 600 13px var(--mono); color: var(--accent); letter-spacing: .06em; text-transform: uppercase; margin-bottom: 10px; }
section { padding: 20px 0; }

/* cards & forms */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; }
.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
label { display: block; font-size: 14px; color: var(--text-2); margin: 0 0 6px; }
textarea, input, select {
  width: 100%; font: 16px/1.5 var(--sans); color: var(--text); background: var(--bg);
  border: 1px solid var(--line-2); border-radius: 8px; padding: 10px 12px;
}
textarea { min-height: 160px; resize: vertical; }
textarea:focus, input:focus, select:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-soft); }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.row > .field { flex: 1 1 180px; }
.field { margin-bottom: 14px; }
.hint { font-size: 13px; color: var(--muted); margin-top: 4px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px;
  padding: 0 18px; border-radius: 8px; border: 1px solid transparent; cursor: pointer;
  font: 600 15px var(--sans); text-decoration: none; transition: filter .15s, background .15s;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-2); }
.btn-ghost:hover { background: var(--accent-soft); }
.btn-danger { background: transparent; color: var(--red); border-color: var(--red-soft); }
.btn-danger:hover { background: var(--red-soft); }
.btn-sm { min-height: 36px; padding: 0 12px; font-size: 14px; }
.btn[disabled] { opacity: .5; cursor: progress; }
.err { color: var(--red); font-size: 14px; margin-top: 8px; }

/* check result */
.verdict { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin: 0 0 16px; }
.badge { font: 700 14px var(--mono); padding: 6px 12px; border-radius: 999px; letter-spacing: .02em; }
.v-strong, .v-pass-gates { background: var(--accent-soft); color: var(--accent); }
.v-medium { background: var(--accent-soft); color: var(--text); }
.v-weak, .v-revise { background: var(--amber-soft); color: var(--amber); }
.v-block { background: var(--red-soft); color: var(--red); }
.layer { margin-top: 18px; }
.layer h3 { font: 600 14px var(--mono); color: var(--text-2); text-transform: uppercase; letter-spacing: .05em; }
.items { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.item { display: grid; grid-template-columns: 26px 1fr; gap: 10px; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg-2); }
.item .ic { font: 700 15px var(--mono); line-height: 1.5; text-align: center; }
.s-block .ic { color: var(--red); } .s-warn .ic { color: var(--amber); }
.s-ok .ic { color: var(--accent); } .s-consider .ic, .s-info .ic { color: var(--muted); }
.s-block { border-color: var(--red-soft); } .s-warn { border-color: var(--amber-soft); }
.item p { margin: 2px 0 0; color: var(--text-2); font-size: 15px; }
.chip { display: inline-block; font: 500 12px var(--mono); color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; margin-left: 6px; vertical-align: 1px; }

/* mechanics */
.state { font: 700 12px var(--mono); padding: 3px 8px; border-radius: 6px; text-transform: uppercase; letter-spacing: .04em; white-space: nowrap; }
.st-on { background: var(--accent-soft); color: var(--accent); }
.st-off { background: var(--red-soft); color: var(--red); }
.st-other { background: var(--amber-soft); color: var(--amber); }
.mech-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 600 12px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
td.num { font-family: var(--mono); text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.neg { color: var(--red); }
.table-wrap { overflow-x: auto; }
.ev { font: 12px var(--mono); margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; }
.ev a { color: var(--muted); }

/* cabinet */
.proj { display: flex; justify-content: space-between; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.proj:hover { border-color: var(--accent); }
.mat { display: flex; gap: 10px; justify-content: space-between; align-items: flex-start; padding: 10px 0; border-bottom: 1px solid var(--line); }
.mat p { margin: 0; white-space: pre-wrap; word-break: break-word; color: var(--text-2); font-size: 15px; }
.pill-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.pill-tabs button { min-height: 36px; padding: 0 12px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent; color: var(--text-2); cursor: pointer; font: 500 14px var(--sans); }
.pill-tabs button[aria-pressed="true"] { background: var(--accent-soft); color: var(--text); border-color: var(--accent); }
.wait { display: flex; align-items: center; gap: 10px; color: var(--text-2); }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .25; } }
@media (prefers-reduced-motion: reduce) { .dot { animation: none; } * { transition: none !important; } }

footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 20px 0 32px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; gap: 16px; flex-wrap: wrap; justify-content: space-between; }
[hidden] { display: none !important; }
.hint.tight { margin: -6px 0 14px; }
.steps { padding-left: 20px; margin: 8px 0 0; }
.steps li + li { margin-top: 6px; }
.view { padding: 32px 0; }
.stack > * + * { margin-top: 16px; }
.grid { align-items: start; }
.nav a.btn-primary { color: var(--accent-ink); }
.nav a.btn-primary:hover { background: var(--accent); filter: brightness(1.08); }
td.val { font-family: var(--mono); text-align: right; overflow-wrap: anywhere; }
.ev a, .ev span { overflow-wrap: anywhere; }
@media (max-width: 640px) {
  .top .wrap { gap: 6px; padding-top: 10px; padding-bottom: 8px; }
  .nav { margin-left: 0; width: 100%; gap: 2px; }
  .nav a { padding: 6px 8px; font-size: 14px; }
  .nav a.btn-primary { margin-left: auto; }
  .hero { padding: 24px 0 12px; }
  .card { padding: 16px; }
}